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CY2291 Datasheet(PDF) 6 Page - Cypress Semiconductor

Part No. CY2291
Description  Three-PLL General Purpose EPROM Programmable Clock Generator
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Maker  CYPRESS [Cypress Semiconductor]
Homepage  http://www.cypress.com
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CY2291 Datasheet(HTML) 6 Page - Cypress Semiconductor

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CY2291
Document #: 38-07189 Rev. *C
Page 6 of 12
VIH
HIGH-Level Input Voltage[9] Except crystal pins
2.0
V
VIL
LOW-Level Input Voltage[9]
Except crystal pins
0.8
V
IIH
Input HIGH Current
VIN = VDD–0.5V
< 1
10
μA
IIL
Input LOW Current
VIN = +0.5V
< 1
10
μA
IOZ
Output Leakage Current
Three-state outputs
250
μA
IDD
VDD Supply Current
[10]
Industrial
VDD = VDD max., 3.3V operation
50
70
mA
IDDS
VDD Power Supply Current
in Shutdown Mode[10]
Shutdown active,
excluding VBATT
CY2291I/CY2291FI
10
100
μA
IBATT
VBATT Power Supply Current VBATT = 3.0V
5
15
μA
Switching Characteristics, Commercial 5.0V
Parameter
Name
Description
Min.
Typ.
Max.
Unit
t1
Output Period
Clock output range, 5V
operation
CY2291
10
(100 MHz)
13000
(76.923 kHz)
ns
CY2291F
11.1
(90 MHz)
13000
(76.923 kHz)
ns
Output Duty
Cycle[11]
Duty cycle for outputs, defined as t2 ÷ t1
[12]
fOUT > 66 MHZ
40%
50%
60%
Duty cycle for outputs, defined as t2 ÷ t1
[12]
fOUT < 66 MHZ
45%
50%
55%
t3
Rise Time
Output clock rise time[13]
35
ns
t4
Fall Time
Output clock fall time[13]
2.5
4
ns
t5
Output Disable
Time
Time for output to enter three-state mode after
SHUTDOWN/OE goes LOW
10
15
ns
t6
Output Enable
Time
Time for output to leave three-state mode after
SHUTDOWN/OE goes HIGH
10
15
ns
t7
Skew
Skew delay between any identical or related outputs[3,
12, 15]
< 0.25
0.5
ns
t8
CPUCLK Slew
Frequency transition rate
1.0
20.0
MHz/m
s
t9A
Clock Jitter[14]
Peak-to-peak period jitter (t9A Max. – t9A min.),% of
clock period (fOUT < 4 MHz)
< 0.5
1
%
t9B
Clock Jitter[14]
Peak-to-peak period jitter (t9B Max. – t9B min.)
(4 MHz < fOUT < 16 MHz)
< 0.7
1
ns
t9C
Clock Jitter[14]
Peak-to-peak period jitter
(16 MHz < fOUT < 50 MHz)
< 400
500
ps
t9D
Clock Jitter[14]
Peak-to-peak period jitter
(fOUT > 50 MHz)
< 250
350
ps
t10A
Lock Time for
CPLL
Lock Time from Power Up
< 25
50
ms
Electrical Characteristics, Industrial 3.3V (continued)
Parameter
Description
Conditions
Min.
Typ.
Max.
Unit
Notes
11. XBUF duty cycle depends on XTALIN duty cycle.
12. Measured at 1.4V.
13. Measured between 0.4V and 2.4V.
14. Jitter varies with configuration. All standard configurations sample tested at the factory conform to this limit. For more information on jitter, please refer to the application
note: “Jitter in PLL-Based Systems.”
15. CLKF is not guaranteed to be in phase with CLKA-D, even if it is referenced off the same PLL.
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